All sounds like good advice to me.
I find pax like to know what's of interest en route too.So,if for example you're passing over lac Leman (lake Geneva to the rest of us),let them know.But only if you're coming up to it and its visible without people having to stand on one another's groins to get a glimpse.
Also,be aware in this regard of what's going on in the cabin and in the pax's heads.Its a bad idea to say,"ladies and Gentlemen,we've just entered the hold over Biggin and if you look out of the left hand side you'll see 4/6/8 aircraft all just a few hundred foot away".As a paxing pilot,i'd appreciate that stuff,but your average joe would quite likely begin to hyperventilate/pray/wet themself.